JPH11308494A - Optical reader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily detach members such as a connector and a connection cable, for connecting the inside and outside of an optical reader from a case body without generating dust. SOLUTION: This optical reader 1 is provided with a case body 5 for housing an optical read means 4 for fetching data to the inside of the reader through an optical transparent body 2 and a circuit part 12 for operating the optical read means 4 in the inside and is composed in such a manner that an optical path between the optical read means 4 and the optical transparent body 2, the optical read means 4 and the circuit part 12 are enclosed by the case body 5. In this case, a connector part for electrically connecting the circuit part 12 to the outside of the case body 5 is formed by a unit body 16 in which a packing member 18 is attached to a packing supporting part 17 positioned around an external exposing part 19, an opening part 21 for exposing the external exposing part 19 to the ouside of the case body 5 is formed on the case body 5 and the unit body 16 is fixed to the inner side of the case body 5 so as to expose the external exposing part 19 from the opening part 21 to the outside and to clamp the packing member 18 by the case body 5 and the packing supporting part 17 to be in press contact.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an optical reader. More specifically, the present invention relates to a connector and a connection cable sealing structure for electrically connecting the inside and outside of a case body of an optical reader.

[0002]

2. Description of the Related Art In an optical reader incorporating a lens and an image pickup device, it is desired to seal a case body in order to prevent intrusion of dust and dust. For this reason, a sealing structure is provided between the case and the connector or connection cable for electrically connecting the inside and the outside of the case of the optical apparatus.

[0003] As shown in FIGS. 10 and 11, this sealing structure is a packing 103 made of an elastic body attached to the inside of the bottom 102 of a box-shaped case 101 covering the outside of the optical reader 100. And an opening 104 penetrating the bottom 102 and the packing 103, and a connector 106 attached to a circuit board 105 housed in the case body 101 and exposed to the outside from the opening 104. The connector 106 is airtightly fixed to the packing 103 and the case body 101 from the outside of the case body 101 by the sealant 107 at the opening 104.
Thereby, a sealing property around the connector 106 can be obtained.

[0004]

However, in the above-described sealing structure, since the connector 106, the case body 101, and the packing 103 are fixed by the sealant 107, cleaning of the inside of the optical reader 100 and removal of parts are performed. When the case body 101 is detached for replacement, a special jig for separating the case body 101 while holding down the body holding frame 108 is required. For this reason, the case body 101
Since a special jig must be prepared for the removal, the removal operation cannot be easily performed with a general-purpose tool.

Further, when the case body 101 is detached, the connector 106 is forcibly pulled out from the opening 104, so that the sealant 107 and the packing 103 are cracked to generate dust and dust. If the dirt and dust adhere to, for example, the inner surface of the optically transparent body 109, the image quality of the read image will be adversely affected. Is very complicated to remove. For this reason, the removal work of the case body 101 must be performed while blowing ion wind in a clean room, for example, which is very complicated.

Furthermore, since the sealant 107 must be applied to the outer periphery of the connector 106 when assembling the optical reader 100, the assembling operation becomes complicated and takes a long time. In addition, since the sealant 107 is applied to the outer periphery of the connector 106, the appearance of the optical reader 100 becomes poor. Therefore, the work of applying the sealant must be performed carefully while paying attention to the deterioration of the external appearance, and the workability of the assembly is poor.

[0007] The above-described problem similarly occurs when a connection cable for connecting the inside and outside of the optical reader 100 is provided so as to pass through the case body 101.

Accordingly, the present invention provides an optical reader having a sealing structure capable of easily removing members such as connectors and connection cables for connecting the inside and outside of the apparatus from the case body without generating dust. The purpose is to provide.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, there is provided an optical reading means for taking data into an apparatus through an optically transparent body and an optical reading means for operating the optical reading means. An optical reading device comprising a case body for housing the circuit portion therein, and configured so that the optical path between the optical reading means and the optically transparent body and the optical reading means and the circuit portion are sealed by the case body; A connector portion for electrically connecting the circuit portion to the outside of the case body is formed by a unit body in which a packing member is attached to a packing support portion located around the externally exposed portion of the connector portion, and the externally exposed portion is formed by the case. An opening for exposing to the outside of the body is formed in the case body, and the externally exposed part is exposed to the outside from the opening and the packing member is sandwiched between the case body and the packing support part. And so as to secure the unit body to the inside of the case body so as to be pressed.

Therefore, since the connector portion is formed by a unit body including the packing member, the connector portion can be attached to and detached from the case body by a general-purpose screw member or the like. Therefore, the case body can be easily removed from the optical reader.

Also, since the packing member is sandwiched and pressed between the case body and the packing support portion, sealing can be performed without using a sealing agent between the case body and the connector portion. For this reason, since the sealing agent does not break when the connector portion is removed from the case body, generation of dust and dust can be prevented.

In addition, since no sealant is used between the case body and the connector portion, the appearance can be improved, and it is not necessary to carefully apply the sealant while paying attention to the deterioration of the appearance. The workability of assembly can be improved.

Further, in the optical reader according to the second aspect, the unit body is connected to an external connector of a case body connectable to the connector part and forms an external exposure part, and the connector socket. A connector board fixed to the case, a connector socket and the connector board are fixed to the case body, a holder having a packing support portion, and a packing member attached to the packing support portion on the outer periphery of the connector socket.

Therefore, the connector can be attached to and detached from the case by attaching and detaching the holder to and from the case using a general-purpose screw member or the like, so that the connector can be easily detached from the case. become.

Further, in the optical reader according to the third aspect, a sealant is provided between the connector substrate and the holder. Therefore, sealing between the connector substrate and the holder can be performed.

According to a fourth aspect of the present invention, there is provided a case body which houses therein an optical reading means for taking in data into the apparatus via an optically transparent body and a circuit section for operating the optical reading means. An optical reading device comprising: an optical path between an optical reading unit and an optically transparent body; and an optical reading unit and a circuit unit which are enclosed by a case body. A draw-out portion for pulling out a connection cable to be connected from the case body is formed by a unit body in which a packing member is attached to a packing support portion located around the externally exposed portion of the draw-out portion, and the externally exposed portion is provided outside the case body. An opening to be exposed is formed in the case body, and the externally exposed part is exposed to the outside from the opening, and the packing member is pressed and held between the case body and the packing support part. And so as to secure the lead portion inside of the case body so.

Accordingly, since the draw-out portion is formed by the unit body including the packing member, the draw-out portion can be attached to and detached from the case body by a general-purpose screw member or the like. Therefore, the case body can be easily removed from the optical reader.

Further, since the packing member is sandwiched and pressed between the case body and the packing support portion, sealing can be performed without using a sealant between the case body and the connection cable. For this reason, since the sealant is not broken when the connection cable is removed from the case body, generation of dust and dirt can be prevented.

Moreover, since no sealant is used between the case body and the connection cable, the appearance can be improved and
It is not necessary to carefully apply the sealant while paying attention to the deterioration of the appearance, and the workability of the assembly can be improved.

Further, in the optical reader according to the fifth aspect, the unit body includes a connection cable electrically connected to the outside of the case body, the connection cable fixed to the case body, and a packing support portion and an external exposure portion. A holder having
A packing member attached to the packing support at the outer periphery of the externally exposed portion.

Accordingly, the connection cable can be attached to and detached from the case body by attaching and detaching the holder to and from the case body with a general-purpose screw member or the like, so that the connection cable can be easily detached from the case body. become.

Further, in the optical reader according to the sixth aspect, a sealant is provided between the connection cable and the holder. Therefore, sealing between the connection cable and the holder can be performed.

Further, in the optical reader according to the present invention, the optical transparent body forms a work passage through which the work for reading the image passes, and the optical reading means enters through the optical transparent body. It has a lens for taking in light and an image sensor.

Therefore, the image of the work passing through the work passage passes through the optically transparent body and enters the lens.
Further, this image is incident on the image sensor and converted into an electric signal.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail based on an example of an embodiment shown in the drawings. 1 to 8 show an embodiment of the optical reader 1 of the present invention.
The optical reader 1 includes a case body 5 that houses therein an optical reader 4 that takes in data into the apparatus via an optical transparent body 2 and a circuit section 12 for operating the optical reader 4. Have. In the present embodiment, the optical reading device 1 reads a pattern of a coin as the work 13 and uses the pattern for determining the type and authenticity of the coin. However, the application of the optical reader 1 is not limited to coin reading.

The optical reading device 1 includes an optical path between the optical reading means 4 and the optically transparent body 2 and the optical reading means 4 and the circuit section 1.
2 is formed so as to be enclosed by the case body 5. In the present embodiment, the circuit section 12 has two circuit boards, and the optical reading means 4 has a lens group 41, an image sensor 42, and a CCD board 43. The lens group 41 of the optical reading means 4 and the CCD
The substrate 43 and the substrate of the circuit section 12 are fixed to the main body frame 3 and the optically transparent body 2 is fixed to the main body frame 3 via the guide member 14, so that the optical reading means 4 and the circuit section 12 The main body frame 3, the guide member 14 and the optically transparent body 2 are integrated as a whole to form an inner body 15.

The case body 5 is made of metal and has a rectangular parallelepiped shape whose upper side is opened. The attachment between the case body 5 and the inner body 15 is performed by fitting the open edge 53 of the case body 5 to the step 6 on the outer periphery of the guide member 14 of the inner body 15.

In this optical reader 1, a connector for electrically connecting the circuit section 12 to the outside of the case body 5 is provided with a packing member on a packing support section 17 located around an externally exposed section 19 of the connector section. 18 is formed by the unit body 16 attached thereto. In addition, case body 5
The bottom 20 is formed with an opening 21 formed of a through hole for exposing the externally exposed portion 19 to the outside of the case body 5.
In the present embodiment, the opening 21 is formed in the bottom portion 20 of the case body 5, but is not limited to this, and the side portion 52 of the case body 5
May be formed.

Further, the unit body 16 is fixed to the case body 5 so that the externally exposed portion 19 is exposed to the outside through the opening 21 and the packing member 18 is pressed between the case body 5 and the packing support portion 17. It is fixed inside. The packing member 18 is made of an elastic material such as rubber, and in the present embodiment, has a plate shape having a through hole in the center. As this packing member 18, commercially available O
A ring or the like may be used.

For this reason, the connector is connected to the packing member 18.
The connector can be attached to and detached from the case body 5 with a general-purpose screw member or the like. Thus, the case body 5 can be easily removed from the main body 15 without using a dedicated jig. Further, since the packing member 18 is sandwiched and pressed between the case body 5 and the packing support part 17, the sealing performance between the case body 5 and the connector part can be improved, and the connection between the case body 5 and the connector part can be improved. Sealing can be performed without using a sealing agent therebetween. For this reason,
When removing the case body 5 from the main body frame 3, the sealant between the connector portion and the case body 5 is not broken, so that generation of dust and dust can be prevented. Moreover,
Since no sealant is used between the case body 5 and the connector portion, the appearance can be improved, and it is not necessary to carefully apply the sealant while paying attention to the deterioration of the appearance, so that the workability of assembly is eliminated. Can be improved.

Here, the unit body 16 includes a connector socket 19 which is connected to an external connector of the case body 5 connectable to the connector portion and forms an externally exposed portion, and a connector which is connected and fixed to the connector socket 19. Substrate 2
2, a holder 23 for fixing the connector socket 19 and the connector board 22 to the case body 5 and having a packing support portion 17, and a packing member 18 attached to the packing support portion 17 on the outer periphery of the connector socket 19. The holder 23 includes a receiving hole 24 for receiving the connector socket 19, a concave packing support portion 17 formed at an edge of the receiving hole 24 on a surface facing the inner surface of the case body 5 and receiving the packing member 18, Substrate 2
A board fixing hole 26 for screwing the holder 2 to the holder 23 with a bolt 25, and a bolt 27 from the outside of the case body 5.
And a holder fixing hole 28 for screwing the holder 23 to the case body 5.

The connector socket 19 is connected and fixed to the connector board 22 by soldering. The connector board 22 to which the connector socket 19 is fixed is screwed to the holder 23 with the connector socket 19 housed in the housing hole 24 of the holder 23. Here, a sealant 29 is applied to the contact portion between the holder 23 and the connector board 22 from the outer peripheral side. As the sealant 29, for example, an adhesive made of a synthetic resin can be used. Therefore, sealing can be performed between the holder 23 and the connector board 22.

Further, a packing member 18 is provided so as to surround the outer periphery of the connector socket 19. The packing member 18 is housed in the packing support 17. Then, the holder 23 is screwed to the case body 5 from the outside of the case body 5 with the distal end of the connector socket 19 being exposed from the inside of the case body 5 through the opening 21 to the outside. For this reason, the case body 5 and the holder 2
The sealing member 18 can be squashed between the sealing member 3 and the sealing member 3 to achieve sealing. Moreover, since the packing member 18 is provided on the outer periphery of the connector socket 19, the gap between the connector socket 19 and the packing member 18 can be sealed.

The connector board 22 and the circuit section 12 are connected by, for example, a flexible cable 30. One end of the flexible cable 30 is directly soldered to the connector board 22, and the other end is connected to the board of the circuit section 12 via the cable socket 31.

Here, when the holder 23 is pressed from the outside of the inner body 15 to the inner side, the holder 23 comes into contact with the circuit section 12 fixed to the main body frame 3 and the optical reading means 4 to be outside the inner body 15. It keeps you from entering inside while it is located. More specifically, the holder 23 is
Circuit board and body frame 3 of the circuit portion 12 fixed to the
The optical reading means 4 is fixed to the CCD substrate 43 of the optical reading means 4 in a loose state. Further, the connector board 22 is disposed so as to enter the inside of the CCD board 43. Therefore, when the connector board 22 comes into contact with the CCD board 43 from the inside, the unit body 16
5 can be prevented from falling off. For this reason, since the holder 23 is positioned by the substrates 12 and 43, the workability can be improved when the case body 5 is put on the inner body 15 and the holder 23 is screwed.

On the other hand, the optically transparent body 2 forms a work passage 32 when the work 13 from which an image is read passes. That is, the work 1 is placed on the surface of the optical transparent body 2.
3 slides. Then, a light beam from a light emitting body 33 composed of, for example, an LED disposed below the guide member 14 passes through the optically transparent body 2 and irradiates the work 13, and the reflected light passes through the optically transparent body 2. It is taken into the optical reading means 4. Here, the optical transparent body 2 is a disk made of sapphire glass. The optically transparent body 2 is supported by the guide member 14 so as to be located at the center of the upper part of the inner body 15. Therefore, the area of the expensive sapphire glass can be minimized, so that the production cost can be reduced and the sapphire glass can be hardly damaged.

The work 13 of the optically transparent body 2
Guide plates 34, 34 forming the work passage 32 are arranged before and after in the traveling direction of. Each guide plate 34 has an arc-shaped concave portion that matches the outer edge of the optically transparent body 2.
The guide plate 34 is supported by the guide member 14 with the concave portion aligned with the optically transparent body 2. For this reason, since the guide member 14 can be made of, for example, a metal and subjected to a nitriding treatment or the like and hardened, abrasion of the work passage 32 due to sliding of the work 13 can be reduced. In the present embodiment, the optical transparent body 2 is formed into a circular shape,
4 and 34 are provided, but the invention is not limited thereto, and the optical transparent body 2 may be rectangular and may cover the entire surface of the inner body 15.

Further, the optically transparent body 2 and each guide plate 34
A taper is formed at the edge of the surface. For this reason, the work 13 includes the optically transparent body 2 and the respective guide plates 34,
It is possible to prevent the optical transparent body 2 from being caught at the boundary between the guide plates 34 and 34 when sliding along the guide 34.

The inner surface of the optically transparent body 2 is provided with an antireflection coating. Here, the inventors of the present application have found that the antireflection may be effectively performed by making the peak wavelength of the antireflection coating different from the wavelength of the light emitting body 33. For example, when sapphire glass is used as the optically transparent body 2 and the light emitting body 33 has a wavelength of 950 nm in the infrared region as in the present embodiment, the antireflection coating should have a peak wavelength of about 600 nm. Thereby, the reflection can be effectively prevented. As a result, it is possible to suppress the occurrence of ghost due to the reflection on the optical transparent body 2 and improve the image quality. In the present embodiment, the peak wavelength of the anti-reflection coating is made different from the wavelength of the luminous body 33. However, the present invention is not limited to this, and the length of each wavelength may be made equal.

Further, the optical reading means 4 is provided with the optical transparent body 2.
A lens group 41 that takes in reflected light from the work 13 that is transmitted through the lens 13 and forms an image, and an image pickup device 42 that converts the formed image into an electric signal, for example, a CCD. The imaging device 42 is mounted on a CCD substrate 43 fixed to the main body frame 3.

The lens group 41 is held by mirror copper 35. The mirror copper 35 is held by the lens support frame portion 36. The lens support frame 36 is formed integrally with the main body frame 3. An annular field mask 3 surrounding the optical path is provided on the upper part of the lens support frame portion 36.
7 is attached. The inner edge of the field mask 37 prevents the peripheral edge of the optically transparent body 2 from being reflected. Since the visual field mask 37 is provided at a position close to the lens group 41, the visual field mask 37 can be made smaller than that provided near the optical transparent body 2, and the peripheral edge of the optical transparent body 2 is prevented from being reflected. Thus, the unevenness of the work 13 can be clearly recognized.

On the side of the lens support frame portion 36, a detection sensor 40 composed of, for example, a phototransistor for detecting that the work 13 is present on the upper surface of the optically transparent body 2 is provided. The detection sensor 40 is located outside the apparatus on the incident axis of the detection sensor 40 (upper part in FIG. 1).
There is provided an LED (not shown) for emitting a light beam toward. When the light from the LED passes through the optically transparent body 2 and enters the detection sensor 40, it is detected that the work 13 is not in a predetermined position, and conversely, the light from the LED is blocked by the work 13. Therefore, when the light does not enter the detection sensor 40, it is detected that the work 13 is at a predetermined position. Here, since the field mask 37 is located near the lens group 41, the optical path from the LED outside the device to the detection sensor 40 is not blocked.

On the other hand, the outer peripheral surface of the guide member 14
Are formed. The open edge 53 of the case body 5 is fitted into the step 6. The contact surface 6 a of the step 6 against which the open edge 53 of the case body 5 abuts is perpendicular to the outer peripheral surface of the case body 5. Thereby, the positioning of the case body 5 can be performed reliably. Also,
The step portion 6 does not need to be continuously provided so as to make a round around the main body frame 3, but only needs to be provided within a necessary and sufficient range for positioning the case body 5.

In this embodiment, as shown in FIGS. 4 and 7, the stepped portion 6 has a shape in which a step is cut off at each central portion of a pair of facing sides, so that the case body 5 The grounding part 11 is located. However,
It is a matter of course that the shape is not particularly limited.

On the other hand, the case body 5 is attached so as to cover the inner body 15. The case body 5 in the present embodiment is made of a steel plate, and four side portions 52,.
Are bent perpendicular to 0, and these side portions 52,.
52 are joined to each other by fillet welding to form an opening at the top.

The open end 53 of the case body 5 has
As shown in FIG. 8 and FIG. 8, a butting portion 7 that contacts the step portion 6 is provided so as to protrude upward. in this case,
The butting portion 7 contacts the portion other than the butting portion 7 of the open edge 53 when the case body 5 is fitted to the guide member 14 and the butting portion 7 comes into contact with the contact surface 6 a of the step portion 6. A gap 8 is formed between the contact surface 6a.

The butting portion 7 is formed in a trapezoidal shape protruding from the open end 53 of the case body 5, and the case body 5 is screwed and fixed to the protruding portion to the guide member 14 by a bolt 44. Screw holes 10 are provided. In this case, the four butting portions 7,..., 7 are provided so that the protruding amounts from the open edge 53 are equal at any positions, so that the case body 5 can be accurately and balancedly positioned with respect to the guide member 14. Has been. However, the shape or form of the butting portion 7 is not limited to such a shape. For example, the case body 5 is correctly positioned with respect to the guide member 14 as described above, such as a semicircular shape or a triangular shape. There is no problem as long as the gap 8 is formed between the open edge 53 of the case body 5 and the contact surface 6a of the step portion 6. The case body 5 and the guide member 14 are fixed by screwing the screwing portion 10 of the butting portion 7 in such a position, and the optical reading device 1 is formed.

The open end 53 of the case 5 is provided with a grounding portion 11 for grounding the case 5. The grounding portion 11 in the present embodiment is formed integrally with the case body 5 between the adjacent butting portions 7 and 7 and has a substantially L-shape protruding from the opening edge 53 beyond the butting portion 7. In this case, the ground portion 11 has a shape that becomes thinner toward the tip, and the upper portion of the tip has a pointed shape that maintains good contact and electrical conductivity. For this reason, the ground part 11 has flexibility.

When the case body 5 is mounted on the main body frame 3 having a potential of 0 via the guide member 14, the tip of the grounding portion 11 of the case body 5 is connected to the frame of the optical apparatus to which the optical reader 1 is mounted. And so on. Since the contacted grounding portion 11 is bent and pressed against the frame or the like of the optical system device, the grounding state of the case body 5 is always maintained. Note that the shape and form of the grounding portion 11 shown here are merely examples, and are not particularly limited as long as the case body 5 can be sufficiently grounded.

A gap 8 is provided by an abutting portion 7 between the open end 53 of the case body 5 and the contact surface 6 a of the step portion 6. The gap 8 is coated with a sealant 9 for fixing the guide member 14 and the case body 5 and improving the sealing performance. In the present embodiment, a highly viscous resin curable material is used as the sealant 9. In this case, since the sealant 9 may be applied to the gap 8, the sealant 9 can be evenly applied to the shape of the gap 8 visually.
This sealant 9 is applied to the gap 8 between the main body frame 3 and the case body 5.
May be applied as a whole so as to fill the gap, but as in the present embodiment, even when applied only to the open edge 53 side of the case body 5, the guide member 14 and the case body 5 Since the sealing property can be sufficiently maintained, it is possible to reduce the application amount within a range where the sealing property is maintained.

Since the sealant 9 is applied to the outer peripheral surface of the optical reader 1 in this manner, it is suitable for removing the case body 5 from the inner body 15. That is, the cured sealing agent 9 can be removed from the surrounding side by scraping or the like, so that the case body 5 can be easily removed from the inner body 15.

When assembling the optical reader 1 described above, the circuit section 12 and the CCD
The unit body 16 of the connector part is attached to 3. Then, the case body 5 is put on the inner body 15, and the holder 23 is screwed to the case body 5 with bolts 27 from outside the bottom 20 of the case body 5. Then, the butting portion 7 of the case body 5 is screwed to the guide member 14, and the sealant 9 is applied to the open edge 53. Thus, the optical reader 1 is assembled.

When removing the case body 5 from the inner body 15, the sealant 9 at the open end 53 is removed, and the butted portions 7 and the bolts 44 and 27 at the bottom 20 are removed. As a result, the case body 5 is no longer fixed to the inner body 15 and can be easily removed from the inner body 15.

According to the optical reader 1 of the present embodiment,
Unit body 16 including connector 18 including packing member 18
Therefore, the connector portion can be attached to and detached from the case body 5 with a general-purpose screw member or the like. Thereby, the case body 5 can be easily removed from the main body 15 without using a dedicated jig.

Further, since the packing member 18 is sandwiched and pressed between the case body 5 and the packing support part 17, the sealing performance between the case body 5 and the connector part can be improved, and the case body 5 and the connector part can be improved. Sealing can be performed without using a sealant between the socket 19 and the socket. For this reason,
Since the sealant between the connector portion and the case body 5 is not broken when the case body 5 is removed from the inner body 15, generation of dust and dirt can be prevented.

Moreover, the case body 5 and the connector socket 1
9 does not use a sealant, so that the appearance can be improved, and it is not necessary to carefully apply the sealant while paying attention to the deterioration of the appearance, thereby improving the workability of assembly. it can.

In the optical reader 1 of this embodiment, a gap 8 is formed between the step 6 and the open edge 53, and the gap 8 between the main body frame 3 and the case body 5 is formed. Is sealed with a sealing agent 9 to enhance the sealing performance. Therefore, it is possible to prevent dust from entering the inside of the optical reader 1.

In addition, the sealant 9 is used to make the case body 5
5 is applied from the outside after assembling, the amount of application can be adjusted visually, and there is no extra application. It does not protrude inside. Also,
Since the sealant 9 is applied later, less attention is required when assembling the case body 5 to the inner body 15. In other words, when attaching the case body 5 to the inner body 15 to which the sealing agent 9 has been applied in advance, the sealing agent 9 is spread over a portion where the gap 8 is formed without excess or shortage while preventing the sealing agent 9 from adhering to other portions. However, according to the present embodiment, the time required for the mounting and the time required for the application are small, and the labor required for the assembly is small.

The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited thereto, and various modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, the holder 23 and the connector socket 19 are separate bodies. However, the present invention is not limited thereto, and the holder 23 and the connector socket 19 may be integrally formed by, for example, injection molding of plastic. In this case, the number of parts decreases.

In this embodiment, the optical reader 1
Of the connector when the inside and outside of the device are connected by a connector, but the present invention is not limited to this.
A cable sealing structure may be used when the inside and outside of the cable are connected by a cable.

In this case, as shown in FIG. 9, the optical reader 1 includes a drawer for pulling out the connection cable 45 for electrically connecting the circuit section 12 to the outside of the case body 5 from the case body 5. Unit body 16 ′ in which packing member 18 is attached to packing support portion 17 around external exposed portion 46 of FIG.
Is formed. Then, the externally exposed portion 46 is
The unit body 16 ′ is fixed to the inside of the case body 5 such that the packing member 18 is exposed to the outside and the packing member 18 is pressed between the case body 5 and the packing support portion 17.

For this reason, since the draw-out portion is formed by the unit body 16 'including the packing member 18, the draw-out portion can be attached to and detached from the case body 5 by a general-purpose screw member or the like. Thus, the case body 5 can be easily removed from the main body 15 without using a dedicated jig. Also, since the packing member 18 is sandwiched and pressed between the case body 5 and the packing support portion 17,
The sealing performance between the case body 5 and the draw-out portion can be improved, and the sealing can be performed without using a sealing agent between the case body 5 and the draw-out portion. For this reason, when removing the case body 5 from the main body frame 3, the sealing agent between the drawer and the case body 5 is not broken, so that generation of dust and dust can be prevented. In addition, since no sealant is used between the case body 5 and the draw-out portion, the appearance can be improved, and it is not necessary to carefully apply the sealant while paying attention to the deterioration of the appearance. Workability can be improved.

Further, the unit body 16 ′ is
Having a connection cable 45 electrically connected to the outside of the device, a holding member 17 for holding and fixing the connection cable 45 to the case body 5, a concave-shaped packing support portion 17, and an externally exposed portion 46 exposed to the outside of the case body 5. 23 and the externally exposed portion 4
And a packing member 18 attached to the packing support portion 17 on the outer periphery of 6. For this reason, the connection cable 45 can be easily removed from the case body 5 and the sealing agent is not broken when the case body 5 is removed from the main body portion 15, thereby preventing generation of dust and dirt. can do. Further, a sealant 47 is applied between the connection cable 45 and the holder 23. Therefore, sealing between the connection cable 45 and the holder 23 can be performed.

In each of the embodiments described above, the case where the sealing structure such as a connector is applied to an optical reader for reading a pattern such as a coin is described. However, the present invention is not limited to this. The present invention may be applied to an optical reader. Also in this case, the case can be easily removed from the main body without using a dedicated jig, and at the time of removal, generation of dust and dust can be prevented.

[0065]

As is apparent from the above description, in the optical reader according to the first aspect, the connector portion is formed by the unit body, and the packing member is pressed between the case body and the packing support portion. Since the unit body is fixed inside the case body as described above, the connector portion can be attached to and detached from the case body with a general-purpose screw member or the like. Therefore, the case body can be easily removed from the optical reader.

Further, since the packing member is sandwiched and pressed between the case body and the packing support portion, the sealing performance between the case body and the connector portion can be improved. In addition, since the sealing can be performed without using a sealant between the case body and the connector part, the sealant is not broken when the connector part is removed from the case body, and generation of dust and dirt is prevented. Can be prevented.

Further, since no sealant is used between the case body and the connector portion, the appearance can be improved, and it is not necessary to carefully apply the sealant while paying attention to the deterioration of the appearance. The workability of assembly can be improved.

Further, in the optical reader according to the second aspect, the unit body includes the holder having the connector socket and the connector board fixed to the case body and having the packing supporting portion. The connector can be attached to and detached from the case body by attaching and detaching it with a general-purpose screw member or the like. Therefore, the connector can be easily removed from the case body.

Further, in the optical reader according to the third aspect, since the sealing agent is provided between the connector substrate and the holder, the sealing between the connector substrate and the holder can be performed.

On the other hand, in the optical reader according to the fourth aspect, the drawer is formed by the unit body, and the drawer is formed so that the packing member is sandwiched between the case body and the packing support and pressed against the case body. The drawer can be attached to and detached from the case body by a general-purpose screw member or the like. Therefore, the case body can be easily removed from the optical reader.

Further, since the packing member is sandwiched and pressed between the case body and the packing support portion, the sealing performance between the case body and the draw-out portion can be improved. In addition, since the sealing can be performed without using a sealant between the case body and the drawer portion, the sealant does not break when the drawer portion is removed from the case body, thereby generating dust and dust. Can be prevented.

Further, since no sealant is used between the case body and the draw-out portion, the appearance can be improved, and it is not necessary to carefully apply the sealant while paying attention to the deterioration of the appearance. The workability of assembly can be improved.

Further, in the optical reader according to the fifth aspect, since the unit body is provided with the holder having the packing supporting portion and the externally exposed portion while fixing the connection cable to the case body, the holder is attached to the case body. The connection cable can be attached to and detached from the case body by attaching and detaching with a general-purpose screw member or the like. Thus, the connection cable can be easily removed from the case body.

Further, in the optical reader according to the sixth aspect, since the sealing agent is provided between the connection cable and the holder, the sealing between the connection cable and the holder can be performed.

In the optical reader according to the seventh aspect, the optically transparent member forms a work passage through which a workpiece to be read an image passes, and the optical reading means enters through the optically transparent member. The above-described effects can be obtained with respect to the sealing structure of the connector and the connection cable in the optical reader that can read the image of the work, since it has the lens that captures the light and the image sensor.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of an optical reading device of the present invention.

FIG. 2 is an enlarged sectional view showing a connector section of the optical reader.

FIG. 3 is a view showing a unit body, (A) is a front view,
(B) is a sectional view taken along line BB in (A).

FIG. 4 is a plan view showing the optical reader.

FIG. 5 is a side view showing the optical reader.

FIG. 6 is a bottom view showing the optical reader.

FIG. 7 is another side view showing the optical reader.

FIG. 8 is a side view showing a case body.

FIG. 9 is an enlarged sectional view showing another embodiment of the connector section of the optical reader.

FIG. 10 is a longitudinal sectional side view showing a conventional optical reader.

FIG. 11 is an enlarged sectional view showing a connector section of a conventional optical reader.

DESCRIPTION OF SYMBOLS 1 Optical reading device 2 Optical transparent body 4 Optical reading means 5 Case body 12 Circuit part 13 Work 16 Unit body (connector part) 16 'Unit body (drawing part) 17 Packing support part 18 Packing member 19 Connector socket (external exposed portion) 21 Opening 22 Connector board 23 Holder 29 Sealant 32 Work passage 41 Lens group 42 Image sensor 45 Connection cable 46 External exposed portion 47 Sealant

Claims (7)

[Claims] An optical reading means for taking in data into the apparatus via an optically transparent body; and a circuit housing for operating the optical reading means. In an optical reading device configured so that an optical path between an optically transparent body and the optical reading means and the circuit section are sealed by the case body, the circuit section is electrically connected to the outside of the case body. The connector portion is formed by a unit body in which a packing member is attached to a packing support portion located around the external exposure portion of the connector portion, and an opening for exposing the external exposure portion to the outside of the case body is provided. Formed in a case body, and the externally exposed portion is exposed to the outside from the opening, and the packing member is sandwiched between the case body and the packing support portion to be pressed. An optical reader, wherein the unit body is fixed inside the case body so as to be in contact with the case body. 2. The connector according to claim 1, wherein the unit body is connected to a connector external to the case body connectable to the connector part and forms the externally exposed part, and a connector board connected and fixed to the connector socket. A holder that fixes the connector socket and the connector board to the case body and has the packing support portion, and the packing member that is attached to the packing support portion on the outer periphery of the connector socket. The optical reader according to claim 1. 3. The optical reader according to claim 2, wherein a sealant is provided between the connector board and the holder. 4. A case body containing therein an optical reading means for taking in data into the apparatus via an optical transparent body and a circuit section for operating the optical reading means, wherein the optical reading means and the In an optical reading device configured so that an optical path between an optically transparent body and the optical reading means and the circuit section are sealed by the case body, the circuit section is electrically connected to the outside of the case body. A draw-out portion for pulling out the connection cable from the case body is formed by a unit body in which a packing member is attached to a packing support portion located around an externally exposed portion of the draw-out portion,
An opening for exposing the externally exposed portion to the outside of the case body is formed in the case body, and the externally exposed portion is exposed to the outside from the opening, and the packing member is formed between the case body and the packing. An optical reader, wherein the drawer is fixed to the inside of the case body so as to be pressed against the support. 5. The unit body, a connection cable electrically connected to the outside of the case body, a holder for fixing the connection cable to the case body and having the packing support portion and the external exposure portion, The optical reader according to claim 4, further comprising the packing member attached to the packing support at an outer periphery of the externally exposed portion. 6. The optical reader according to claim 5, wherein a sealant is provided between the connection cable and the holder. 7. The optically transparent body forms a work passage through which a work for reading an image passes, and the optical reading means includes a lens for taking in light incident through the optically transparent body and an image sensor. The optical reader according to any one of claims 1 to 6, comprising: